sbc block

[Darrin Christen]

I run a Dart Little M with 350 mains 4.030 bore. I think the Bowtie block is a little lighter though, Thinner cylinder walls. I went with the Little M because I already had the 355" rotating assembly but I wanted to be able to build a larger engine future. The Little M would allow that option because of the thick cylinder walls. Dart recomends you can bore it to 4.185" and still have .200" thick cylinder walls. Good Luck!